What does it mean if my fasting glucose is high but my A1C is normal?

What does it mean if my fasting glucose is high but my A1C is normal?

You may have high fasting blood sugar, but your overall blood sugar may be normal, or vice versa. Normal fasting blood sugar levels may not eliminate the possibility of type 2 diabetes. That is why A1C tests are now used to diagnose and screen for prediabetes and diabetes.

What is more accurate A1C or fasting glucose?

The measurement of A1C equals the assessment of hundreds (virtually thousands) of fasting glucose levels and also captures postprandial glucose peaks; therefore, it is a more robust and reliable measurement than FPG and/or 2-h OGTT plasma glucose.

Can you have a low A1C and still be diabetic?

Villacreses says, one important lesson from these fidings is that ”you should not feel 100\% reassured if your A1c number is less than 6.5\% that you are do not have diabetes.” A test result that is greater than 6.4\% defines the beginning of diabetes, so you may have prediabetes or have already progressed to type 2 …

What can cause a false high A1C?

A falsely high A1C result can occur in people who are very low in iron; for example, those with iron-deficiency anemia link. Other causes of false A1C results include kidney failure or liver disease.

Does fasting affect A1C results?

Health care professionals can use the A1C test alone or in combination with other diabetes tests to diagnose type 2 diabetes and prediabetes. You don’t have to fast before having your blood drawn for an A1C test, which means that blood can be drawn for the test at any time of the day.

Will fasting lower A1C?

Intermittent fasting could be a beneficial option for lowering HbA1c in people with type 2 diabetes, scientists report. Fasting was compared to continuous calorie restriction in a new Australian study, and researchers are buoyant fasting could return health benefits.

What can cause false low A1C?

Conditions such as acute and chronic blood loss, hemolytic anemia, and splenomegaly can all cause falsely lowered A1c results. Patients with end-stage renal disease generally have falsely low A1c values. This is primarily due to the associated chronic anemia with decreased red cell survival.

Can HbA1c be wrong?

That’s because glucose stays attached to hemoglobin for as long as the red blood cell that holds them remains in your bloodstream (which is about 2 to 3 months). Certain health conditions that affect your blood and hemoglobin can cause your HbA1C test to be inaccurate.

Which is more accurate A1c or fasting glucose?

According to a recent Chinese study, A1C sensitivity is inferior compared with fasting blood glucose at the population level (19). Also, people with impaired glucose tolerance (IGT), in whom the efficacy of diabetes prevention has been unequivocally proven (20), cannot be detected by A1C.

Why is blood glucose elevated when fasting?

Fasting can definitely raise blood glucose. This is due to the effect of insulin falling and the rising counter-regulatory hormones including increased sympathetic tone, noradrenaline, cortisol and growth hormone, in addition to glucagon. These all have the effect of pushing glucose from liver storage into the blood. This is normal.

How to lower fasting blood sugar levels?

1) Set a good eating schedule. If you are having a hard time maintaining your fasting sugar level, then changing your eating schedule may be key. 2) Reduce the amount of sugar, sodium, fat, and processed foods you eat. 3) Eat more whole foods. Whole foods, such as whole grains, lean proteins, fruits, vegetables, and dairy products can help your glucose levels. 4) Focus on eating a balanced diet. In general, your body needs a balanced diet to operate at its best.

What is the normal range of fasting glucose levels?

Normal Blood Sugars A normal fasting (no food for eight hours) blood sugar level is between 70 and 99 mg/dL A normal blood sugar level two hours after eating is less than 140 mg/dL